# GEOLOGY

## EARTH SCIENCE

### MAGNETISM

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What characteristics do magnetic substances have?
 A They can give a “shock” when you touch them. B They can push or pull objects they are not touching. C They are always black and cold to touch. D They fall faster than other objects when you drop them.
Explanation:

Detailed explanation-1: -The main characteristic of a magnet is that they attract or repel other objects without touching. The attraction and repulsion depends upon the property of the object. We feel like the magnet pushes the object when it is repelling and pull if it is attracting. Was this answer helpful?

Detailed explanation-2: -Magnetic forces are non contact forces; they pull or push on objects without touching them. Magnets are only attracted to a few ‘magnetic’ metals and not all matter.

Detailed explanation-3: -Magnetic Levitation, MagLev for short, is the process where strong and spatially varying magnetic fields exert forces on an object in such a way that is sufficient to counteract its weight due to gravity, allowing the object to ‘float’ off of the ground.

Detailed explanation-4: -Magnetic lines of force form a complete loop and are continuous. The opposite poles of magnets attract each other whereas like poles repel one another. The magnetic lines of force are denser at the poles of a magnet. Parallel magnetic lines of force that travel in opposite directions cancel each other.

Detailed explanation-5: -When two magnets are close, they create pushing or pulling forces on one another. These forces are strongest at the ends of the magnets. The two ends of a magnet are known as the north pole and the south pole.

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